Hi Gents,
Is there any specific Standard or Guideline , where I can find storage requirements for Stainless Steel materials (Spool and pipes)?
Is there any potential hazards regarding contamination of pipes/spools when they stored in the open air (sometimes under rain-on the wood pallets)??
Regards,
Ilkin Hasanov
By 803056
Date 12-23-2020 16:13
Edited 12-30-2020 02:51
I would like to note that welding doesn't change the chemical composition of the base metal. Welding without proper shielding on the back side can result in oxidation. The oxidation is a surface issue, i.e., only the surface that is heated to a high temperature and exposed to oxygen (air) is subject to oxidation. That will reduce the resistance to galvanic corrosion in the area of the weld.
Holding the austenitic stainless steel at a high temperature can result in sensitization. Chrome combines with carbon along the grain boundaries, thereby depleting the chrome along the grain boundaries, leading to intergranular stress corrosion and/or intergranular stress corrosion cracking in wetted environments where the electrolyte contains a halide like chloride. The use of low carbon grades or stabilized grades of austenitic stainless steel will mitigate sensitization.
Cold forming can cause martensite in austenitic stainless steels.
Al